humming getting louder

[bobbydavro]

I have a very old central heating system (Baxi Bermuda Back Boiler) 30+ years old.

Anyway lately the humming (i assume from the pump) has started to get louder to the extent now that the rads themselves are vibrating a little. Its as if the whole house is now throbbing.

Only prob I know of is that theres a slight leak on one of the rads (tiny dribble) but this stops when heating is on.

If I unplug the pump then the throbbing stops immediately.

Anything I can try without being to disruptive? I realise the whole system is on its last legs and will all have to be replaced soon so I don't want to go tinkering too much.

 

[breezer]

new pump?

 

[taydo]

I second that breezer
if everything else is working then there is no reason it wont carry on working when you change the pump.

 

[bobbydavro]

estimated cost for a new pump for my sytem?

and fitting.